MKAnnotationView with custom view and image view

Question

In the My Map application, instead of displaying a pin, I want to show a colored circle of a background with an image in it. The background color (which is a shade of green in the image below) is dynamic. It will look like this:

I created a TCircleView that paints a color in "drawRect".

To show a similar annotation, I created a TCircleView and UIImageView object and add them to the MKAnnotationView object. His gaze is good and visible, as expected. But this does not detect tap / touch to show the call.

I am using the code below:

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {

    if ([annotation isKindOfClass:[MKPointAnnotation class]]) {
        return nil;
    }

    static NSString *annotationIdentifier = @"StickerPin";

    MKAnnotationView *annotationView = (MKAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:annotationIdentifier];

    if (!annotationView) {
        annotationView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:annotationIdentifier];
        annotationView.canShowCallout = YES;
    }

    TCircleView* circleView = [[TCircleView alloc] init];
    circleView.green = [postObj[@"severity"] floatValue]; //dynamic value coming from server

    UIImageView* imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Piano"]];

    CGRect r = imgView.frame;
    r.size.height = r.size.width = 60;
    imgView.frame = r;
    circleView.frame = r;

    [annotationView addSubview:circleView];
    [annotationView addSubview:imgView];

    return annotationView;
}

"didSelectAnnotationView:"
?

Answer 1

. :

@interface TStickerAnnotationView : MKAnnotationView

@property(nonatomic) float stickerColor;

@end

@interface TStickerAnnotationView () {
    UIImageView *_imageView;
    TCircleView *_circleView;
}


@end

@implementation TStickerAnnotationView

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // make sure the x and y of the CGRect are half it's
        // width and height, so the callout shows when user clicks
        // in the middle of the image
        CGRect  viewRect = CGRectMake(-30, -30, 60, 60);

        TCircleView* circleView = [[TCircleView alloc] initWithFrame:viewRect];
        _circleView = circleView;
        [self addSubview:circleView];

        UIImageView* imageView = [[UIImageView alloc] initWithFrame:viewRect];

        // keeps the image dimensions correct
        // so if you have a rectangle image, it will show up as a rectangle,
        // instead of being resized into a square
        imageView.contentMode = UIViewContentModeScaleAspectFit;

        _imageView = imageView;

        [self addSubview:imageView];



    }
    return self;
}

- (void)setImage:(UIImage *)image
{
    // when an image is set for the annotation view,
    // it actually adds the image to the image view
    _imageView.image = image;
}

- (void)stickerColor:(float)color {
    _circleView.green = color;
    [_circleView setNeedsDisplay];
}

Answer 2

width height MKAnnotationView 0,0.
, .

, image, frame .

image subviews , frame , subview.

:

imgView.frame = r;
circleView.frame = r;
annotationView.frame = r;  // <-- add this line

Answer 3

Try to find this solution - I think this is relevant http://blog.jaanussiim.com/2014/01/28/floating-annotations.html